//
//  UIColor+Init.m
//  ToolHelper
//
//  Created by liaozhenming on 16/5/23.
//  Copyright © 2016年 liaozhenming. All rights reserved.
//

#import "UIColor+Init.h"

@implementation UIColor (Init)

+ (UIColor*)kk_colorWithHexString:(NSString *)hexString {
    return [self kk_colorWithHexString: hexString andWithAlpha: 1.0];
}

+ (UIColor*)kk_colorWithHexString:(NSString *)hexString andWithAlpha:(CGFloat)alpha {
    
    NSString *cString = [[hexString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
    
    
    if ([cString length] < 6)
        return [UIColor whiteColor];
    if ([cString hasPrefix:@"#"])
        cString = [cString substringFromIndex:1];
    if ([cString length] != 6)
        return [UIColor whiteColor];
    
    NSRange range;
    range.location = 0;
    range.length = 2;
    NSString *rString = [cString substringWithRange:range];
    
    range.location = 2;
    NSString *gString = [cString substringWithRange:range];
    
    range.location = 4;
    NSString *bString = [cString substringWithRange:range];
    
    
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];
    
    if (alpha < 0 || alpha > 1.0) {
        alpha = 1.0;
    }
    
    return [self colorWithRed:((float) r / 255.0f)
                        green:((float) g / 255.0f)
                         blue:((float) b / 255.0f)
                        alpha: alpha];
}

@end
